a(n) is the least m such that A358052(m,k) = n for some k.

Terms

a(0) =1a(1) =2a(2) =5a(3) =8a(4) =14a(5) =20a(6) =32a(7) =38a(8) =59a(9) =59a(10) =63a(11) =116a(12) =122a(13) =158a(14) =158a(15) =218a(16) =278a(17) =278a(18) =402a(19) =548a(20) =642a(21) =642a(22) =642a(23) =642a(24) =642a(25) =1062a(26) =1062a(27) =1668a(28) =2474a(29) =2690